Rick Ellis, who has been at the departure gate for more than a year, is leaving as part of a mass exodus from TVNZ.
Ellis is to appoint a new head of news and current affairs before Christmas, and the head of corporate affairs post has been vacant for several months.
Eased out during Labour's softening of the state broadcaster's commercial edge, Ellis returned in 2005 when Ian Fraser fell out with the board. He's credited with calming long-running dysfunction and grievance among staff about the shift to new media and marketing control over programming, including news.
Speculation about a replacement has thrown up several candidates:
Julie Christie: Entrepreneurial founder of Touchdown TV has close contacts and the ear of National politicians. TVNZ board would be wary of an appointment that might lead to upheavals inside the company.